Gear for traction-engines.



PATENTED APR. 16, 1907.

At HARROLD, GEAR FOR TRACTION ENGINES.

APPLIG ATION FILED MAR. 8,1904

2 SHEETSSKBET l.

I nuentoz $1 A. [fa/ row PATENTED APR. 16, 1907.

A. HARROLD.

GEAR FOR TRACTION ENGINES.-

APPLIGATION FILED MAR.8,1904.

2 SHEETSSHEET I 5111 van do: A. Ha I'I'OZ Z wit'neoowa UNITED STATES PATENT OFFICE.

AMOS HYARBOLD, or NEwAR -oHIo,

GEAR- FOR TRACTION-ENGINES.

' which the following is a specification.

My invention relates to improvements in 5 gears for traction-engines, whereby different 5 speeds are provided and frictional contact between the power-shaft and the gearing communicating motion to the propelling-axle together with certain. details of construction, all of which will be fully explained by refer ence to the accompanying drawings, in?

which? Figure 1 is a side elevation. Fig. 2 is a transverse section through line 3 3, Fig. 1.

the

Fig-3 is a top view showing the relation 0 various gears and their arrangement.

Similar numerals of reference indicate like parts in all the'fi'gures of the drawings.

1 represents a portion of the engine-frame which may be constructed in any well-known manner, reference being had to properly attaching and locating the various parts pertaining to the present invention.

2 re resents the traction-axle which is j ourna ed to the frame in the ordina man- To the traction-axle 2 are attac ed the traction or propelling wheels 3, and to the wheels 3 are secure y attached the gearwheels 4, which gear-wheels may be attached to the spokes of the traction-wheels 3, as

shown in Fig. 1 or the may be otherwise attached, inasmuch as t e 0111 object desired is toprovide suitable attac ment between the traction-wheels and the gear-wheels. To

the frame 1 is journaled the compensatinggear shaft 5, upon which shaft is loosely mounted the internal gear-wheel 6, to the side of which is located the fixed bevel-gear 7,

which bevel-gear meshes with the gear-pin- 1 ion 8, which gear-pinion meshes with the loosely-mounted bevel-gear 9, said bevel-gear 9 being fixed'to the sleeve 10, and upon which sleeve 10is fixed the pinion 11, which pinion I The parts i just above described constitute what might l be termed an ordinary compensating'gear 5 meshes with'the gear-wheel 4.

and forms no particular part of the present invention; but in order tocarr out the purpose of the present invention t e com ensating gear must necessarily be employe Specification of Letters Patent. v Patented April 16, 1907. Application filed March a, 1904. Serial No. 197,164. 4

, It will be understood that upon the o i site end of the shaft 5 is securely fixe plnion 12 wheels -4.

l' with the internal gear-wheel 6. The shaft 19 is journaled in the eccentric bearings 20, which eccentric bearings are so ported and carried by suitable casings 21, w ich casings are fixed in an manner tothe i iame 1 or its e uivalent.

Upon the shaft '19. are. sli ably mounted the sleeves 22 and 23, and to said sleeves are securely attached or formed integral therewith the differentiating pinions 24, 25, 26,

the

Upon the shaft 13 mounted the pinion 18, which pinion meshes. i

convenient and well-known and 27, said pinions bein located and as j ranged substantially as lustrated in the drawings and all for the purpose hereinafter i described. The pinions 24 and 25 are moved in unison and likewise the pinions 26 and '27. The pinions 24, 25, 26, and 27 are i so located and arranged with reference to the i gear-wheels 14, 15, 16, and 17 that they can 2 be thrown in and out ofmesh at the will of l the operator, by which arran ement four distinotand independent spee s are rovided. It will be understood that when t e pinion l 24 is brought in mesh with the gear-wheel 14 the slowest speed is obtained and when the j pinion 27 is brought in mesh with the gear- 2 wheel 17 the-highest speed is maintamed.

The other pinions and gear-wheels provide l or produce various speeds between the highest and lowest. For convenience the pinions, together with their sleeves located upon the shaft 19, can be so arranged that they can all be thrown out of mesh,'which is the posii tion illustrated in Fig. 3. Upon the shaft 19 are securely ,fixed the i friction-wheels 28. Said friction-wheels are i of the .usual construction and are located between the inner surfaces of the wheels 29 and the outer surfaces of the hubs 30, which hubs are preferably formed integral with the wheels 29, said hubs and wheels being securely fixed to the power or engine shaft 31.

It will be understood that by my eculiar 19 in opposite direction byshifting the friction-wheels 28 from contact with the inner arrangement I am enabled to rotate t e shaft surfaces of the wheels 29 to the outer surfaces of the hubs 30, this'being accomplished by means of suitable arms 32, fixed to or ,formed integral with the eccentric bearings lever, which may be of any well-known con-- struction and forms no particular part of the present invention and no illustration is deemed necessary.

The friction-wheels 28 may be detached or disconnected or brought out of contact with the inner surfaces of the wheels 29 andthe peripheries of the hubs 30, at which time no operative connection is maintained between the engine-shaft 31 and the various gears or propelling mechanism, this being very desirable, especially in gasole'ne traction-engines, owing to the fact that gasolene engines cannot well be started under a load or at the time they are to perform the work designed to be accomplished.

It will be understood that when the friction-wheels are in contact with the inner surfaces of the wheels 29 the engine proper will be propelled in one direction and when said friction-wheels are brought into contact with the hub 30 the engine will be propelled in the opposite direction, by which arrangement the engine proper-can be propelled forward or backward, and, as designed in the present instance, the backward movement is brought about by contact with the hubs 30, which brings about a slow movement owing to the fact that the hubs 30 are of less diameterof mesh at any time during the movement of the shaft 19 by means of the ecc tric bear ings 20.

Having fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is i v 1. In a gear for traction-engines, the combination of a frame, an axle journaled in the frame, driven wheels secured to said axle, a

gear fixed to each of said wheels, a compensat ing shaft, an internaLgear loosely mounted thereon, a pinion fixed to said compensating shaft and meshing with one of the gears on the driven wheels, two beveled gears, mounted adjacent each other, a beveled gear carried l y the internal gear interposed between said two beveled gears, a sleeve, one of The ecce'n said beveled gears located on the sleeve, a pinion onthe sleeve which meshes with one of the gears on the driven wheels, a countershaft journaled in the frame, different-sized gears fixed on the counter-shaft, a pinion on the counter-shaft which meshes with the internal gear, a third shaft, sleeves slidably mounted on the third shaft, pinions of different diameters on the sleeves, said pinions adapted to mesh with the different-sized gears on the counter-shaft, eccentric bearings for the third shaft, friction-wheels fixed to the third shaft, an engine-shaft, wheels 'secured thereto having rims and hubs, the friction-wheels being located intermediate the hubs and inner surface of the rims of the wheels on the engine-shaft and adapted for alternate contact therewith.

2. In a gear for traction-engines, the combination of a frame, an axle journaled in the frame, driven wheels secured to said axle, a ear fixed to each driven wheel, eccentric )earmgs, a shaft mounted in sald eccentric bearings, different-sized gears and frictionwheels on the latter shaft, an engine-shaft,

wheels mounted on the engine-shaft, the

friction-wheels on the eccentrically-mounted shaft being located between the hubs and rims of the wheels on the engine-shaft, a counter-shaft, different-sized gears mounted on the counter-shaft, said latter gears adapted to mesh with the first-mentioned differentsized gears, a' compensating-gear shaft, a pinion mounted on the latter shaft and meshing with the gear fixed to one of the driven wheels, an internal gear mounted on the compensating-gear shaft, a pinion on the counter-shaft, said latter pinion meshing with the internal gear, a sleeve on the compensating-gear shaft, a pinion mounted on the sleeve, said pinion meshing with the gear fixed to one of the driven wheels, a beveled gear mounted on the sleeve, a beveled-gear wheel revolving with the compensating-gear shaft, and a beveled pinion carried by the internal gear between the beveled gears on the sleeve and the compensating shaft.

3. In a gear for traction-engines, the combination of an axle, driven wheels mounted on said axle, gears onthe driven wheels, a compensating-gear shaft, a pinion mounted onthe compensating-gear shaft, said pinion meshing with one of the gears on the driven wheels, a sleeve, a pinion on the sleeve, said pinion meshing with one of the gears on the driven wheels, a counter-shaft, a pinion on the counter-shaft, a series of different-sized gears on the counter-shaft, gearing interposed between the pinion on the countershaft and the pinions on the sleeve and compensating-gear shaft to revolve the latter and the sleeve, a shaft, a series of different-sized pinions on the latter shaft adapted to mesh with the different-sized gears on the countername to. this specification in presence of. two WltIlGSSBS.

shaft, friction-wheels on the shaft carrying the different-sized pinions, an engine-shaft, wheels with rims and hubs mounted on the engine-shaft, and means for engaging the 5 friction-wheels with the hubs or rims of the Witnesses:

AMOS HARROLD.

wheels on the engine-shaft. JNo. 'IMNIE,

In testimony whereof I have signed my F. W. BOND. 

